Box-setting-up machine.



PATENTED DEC. 31, 1907.

J. E. ERIOKSON.

BOX SETTING UP MACHINE.

APPLICATION FILED AUG. 5, 1907.

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PATENTED DEC., 31, 1907i J. E. BRIO-KSON.

BOX SETTING UPv MACHINE.

APPLICATION FILED AUG. 5, 1907.

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No. 875,164. PATENTED,DEG.31,1907;

'J. E. ERIOKSON.

BOX SETTING UP MACHINE. APPLIOATION FILED AUG. 5, 1907.

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N0, 875,164. PATENTEDDEO. 31, 1907.

I J. E. BRIOKSON. BOX SETTING UP MACHINE.

APPLICATION IILED AUG. 5, 1907.

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PATENTED DEC. 81. 1907.

J. E. BRIOKSON.

BOX SETTING UP MACHINE.

APPLIOATION FILED AUG. 5. 1907.

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JOHN E. ERIGKSON, OF ST. PAUL, MINNESOTA.

BOX-SETTING-UP MACHINE.

Specification of Letters Patent.

Patented Dec. 31, 1907.

Application filed August 5. 1907- Serial No. 387,137.

T 0 all whom it may concern:

Be it known that I, JOHN E. EmoKsoN, a citizen of the United States, residing at St. Paul, in the county of Ramsey and State of Minnesota, have invented certain new and useful Improvements in Box-Setting-Up Machines, of which the following is a specification.

My invention relates to machines for uniting the ends and sides of boxes having dovetail joints; and its object is to provide efficient mechanism for holding the side and end boards of a box in vertical planes at right angles to one -another and for pressing their ends together to unite them.

My improvements are illustrated in the accompanying drawings, in which- Figure 1 is a front elevation of a machine containing my improvements; Fig. 2 is a rear elevation of the same; Fig. 3 is a plan view of the same; Fig. 4 is also a plan view, the upper parts of the machine having been removed; Fig. 5 is a transverse section on the plane of the broken line w-tu of Fig. 1; Fig. 6 is a similar section on the broken line oc-as of Fig. 1 Fig. 7 is a similar view on the broken line 2-z of Fig. 1; and-Figs. 8 to 11 show details of the mechanism. In Figs. 5, 6, and 7 the portions of the machine at the left of the planes of the broken lines referred to are shown.

In the drawings 1 designates the main frame of the machine, and 2 the supporting posts therefor. The driving-shaft 3, which is operated by the pulley 4, is arranged below the rear portion of the frame and has its bearings in journal boxes 5 on the upper ends of laterally movable supports 6. These supports are keyed to a rock-shaft 7, the outer end portion of which is mounted in a journal box on the end portion of the frame and the inner end of which is revolubly supported from the frame cross-piece 8 by a hanger 9. For transmitting power from the shaft 3 to the machine the shaft carries a small friction-wheel 10 adapted to engage and operate a larger friction-wheel 11 on the driven-shaft 12. The latter shaft is mounted in journal-boxes 13 and 14 supplied respectively on the cross-pieces 8 and 15. On the inner end of the shaft 12 is a bevel pinion 16 in mesh with a corresponding bevel gearwheel 17.

The rock-shaft 7 is rocked to bring the friction wheels into engagement by means of a foot-lever 18 which extends from the front toward the rear of the machine and has its inner end fulcrumed at 19 to a triangularsh-aped collar 20 keyed, or otherwise secured, to the rock-shaft. From a point immediately in front of the fulcrum 19 a bifurcated arm 21 extends upward from the lever; and near the middle of the arm is pivotally connected a slidable rod 22 around which is a spiral spring 23 that bears against a collar 24 on the outer end of the rod and in a socket 25 formed in an upright piece 26 at the rear of the frame, the spring tending to pull the two partstogether.

The upper end of the lever-arm 21 is pivoted to a horizontal bar 27 the outer portion of which is slidable in a slot 28 in the part 26,

and which has a notch 29 for engaging a stop,

30 at the top of the'slot to limit the inward movement of the bar 27. When the footlever is pressed downward and pulls the bar 27 inward the notch 29 engages the stop 30 and further depression of the foot-lever serves to rock the collar 20 and with it the rock-shaft 7 sufficiently to bring the frictionwheel 10 on the driving shaft in operative engagement with the friction-wheel 11 on the driven shaft. When the foot-lever is relieved of pressure the rod and spring, 22

and 23, respectively, serve to pull the arm 21 rearward, thus rocking the shaft 7 and freeing the friction-wheels from engagement. The extent of such rearward movement of the arm 21 is limited by an adjusting screw 31 that passes through the upright piece 26 to contact with the collar 20. The lower end of the upright piece 26 is pivoted at 82 on a boss at one of the corners of the collar 20, and thus is movable along with the rock shaft and foot-lever.

A brake 33 for the friction-wheel 11 is keyed by means of a hub 34 to the rock-shaft 7, in such position thereon relative to the friction-wheel 10 on the shaft 12 that the centrally pivoted, at .40, to lugs 41 on the frame-piece 8. One end of this rocker is arranged beneath the inner end of the bar 27, and the other end at the rear side of the gearwheel 17. The latter arm of the rocker is in position to be engaged by the hub 42 of the crank-rod 43 which is connected to a crankpin 44 and pressed downward when the wheel is revolved in the direction shown by the arrow (1. Such movement obviously will serve to raise the other rocker-arm and thereby lift the end of the bar 27. And the raising of the inner end of the bar 27 will necessarily lower its outer end and thereby disengage the hook 29 from the stop 30 on the piece 26. Under these conditions the lever-arm 21 will exert no pull upon the part 26 and the brakespring 38 will thus be permitted to turn the rock-shaft to free the friction wheels from contact and apply the brake. So that even if pressure is maintained upon the foot-lever it is ineffective in holding the friction wheels in contact after the crank-pin has operated the rocker 39.

On the end of the rocker-arm 39 which is beneath the bar 27 is pivoted a lifting dog 45 that engages the under side of the bar to lift it when the crank-pin 44 depresses the other rocker-arm. And whenthe bar 27 is thus turned on its fulcrum its rear end is freed from engagement and the sprin 38 operates to turn the rock-shaft 7, the ever-arm 21 slides the bar 27 to the rear of the dog 45. Then when the foot-lever 18 is again depressed its upward arm 21 slides the bar 27 toward the front end and slightly upward upon an incline 46 on the rocker-arm to position on the lifting dog 45 to be again lifted thereby upon the oscillation of the rockerarm.

The gear wheel 17 has substantially onehalf (-1-) of its rim recessed, as shown at 47, to make the rim to that extent a cam. In engagement with this wheel rim is a roller 48 carried by a lifting device for operating the mechanism for clamping the box side boards. This device preferably is formed of two adjustable parts 49 and 50, pivoted together at 51 and the extent of their separation is regulated by means of a screw 52 passed loosely through the part 50 into the part 49 and a set screw 53 passed through the part 50 and enga ing the edge of the part 49. The part 50 is eyed to a transverse rock-shaft 54 which is oscillated when the roller is engaged by the eccentric surfaces of the rim of the gearwheel as the latter revolves. The shaft 54, and a similar rock-shaft 55 near the other end of the machine, are journaled in boxes 56 in side members of the machine frame. On each of these shafts near each end is mounted an angular-shaped lifter, and the lower ends of the pair of lifters atthe rear of the machine are connected by rods 57 pivoted at 58 to downward extensions 59 from the lifters. f

The lifters are preferably composed of collars 60 secured to the rock-shaft and having parallel lateral arms 61,- and within the space between these arms is a slidable block 62 supported on an adjusting screw 63. On the blocks 62 rest loose bars 64 which extend lengthwise of the machine frame, and are movable in upward direction by the lifters for operating the clamps for the box sides.

On the bars 64 rest, at intervals, three pairs of tranverse. bars 65 and 66 which are separately movable in upward direction. Each bar 65 is arranged to engage with its end portions the under sides of horizontal arms 67 formed on the bases of upright plates 68; and each bar 66 is arranged to engage in like manner similar horizontal arms on similar' upright plates. The bars 65 have lugs 69 at their upper sides which seat on the bars 64; while the bars 66 are provided with ad-' justable strips or springs 70 which seat on the bars 64. This difference is for the purpose of pressing one clamp member, 71, rigidly, and

the other, 72, yieldingly against the board.

The clamp members 71 and 72 are connected at their upper and lower ends by bellcranks 73 to the plates 68, and the bell-cranks are fulcrumed at 74 to fixed standards 75. So that when the lifters raise the bars 64 the bars 65 and 66 will lift the arms 67 and plates 68 and thereby swing the bell-cranks and move the clamp members toward each other to clamp the boards. The plates 68 are preferably in form of channel bars so as to partially embrace the posts 75 and be slidable thereon and they have vertical openings 76 to permit them to move toward each other past the posts 75. ported by a common base 77, and the base of the rear pair is slidable for transverse adj ustment in ways 78 on a cross-piece 79.

The cross-pieces 79 have flanges 80 extending downward from their ends, and to these are bolted plates 81 which extend inward at the under sides of longitudinal ribs 82 on the' The posts 75 of a pair are sup' prevent endwise movement of the board.

The rear knees are supported by relatively long blocks 87 which are slidable for adjustment on transverse ways 88. To the faces of theknees are secured vertical bars 89 that are provided with series of projections 90 for backing the tenons of the box ends to prevent them from breaking while being'forced into the mortises of the side boards.

The mechanism for thrusting and retracting the knees is the following. The connecting-rod 43 is pivoted at 91 to the lower end of a lever 92, the upper end of whichis with the shaft. To the upper pins 97 the arms 99 of a yoke 100 are pivoted by means of boxes 101 of angular responding recesses in the arms. Screws 102 passing through threaded nuts 103 attached to the yoke have their inner ends swiveled in the shanks of the couplings 104 that connect them by a hinge-joint 105 to the backs of the adj acentknee 83. So that the oscilla tions of the cranks will correspondingly recipprocate the yoke 1.00 and with it the connected knee 83. For operating the knee 83 at the other end of the machine pitmen 106 are connected to the ends of the knee for re ciprocating'it in unison with the knee ad jacent to the crank-wheels. The end portions 107 of the pitmen are screw-threaded for the purpose, as in the case of the threaded rods 102, of making the connections adjustable for varying the positions of the knees to accommodate the mechanism for longer or shorter boxes. The adjustment of the knees lengthwise of the machine is effected by means of worm-wheels 108 which engage the respective screws 102 and 107, and which are rotated by worms 109 on transverse shafts 110. One of these shafts is mounted in journal-boxes 111 on the yoke 100; and the other has its bearings in brackets 112 at the opposite ends of the knee 83. The shafts 1.10 may be turned by hand-wheels 113 on their front ends, and the turning of either handwheel will serve to simultaneously move both ends of the adjacent knee. These movements for adjustment of the knees are utilized for correspondingly adjusting the adjacentpairs of side-board clamps. Bars 114 bolted to the under sides of the clamp supports 79 extend thence tothe bases of the knees where they have upright pins 115 registering in slots 116 in the latter bases. These slots are long enough lengthwise of the machine, to allow the knees to be reciprocated by the crankwheels 96 without moving the side-board clamps; but when the knees are adjusted inward or outward by the operation. of the hand-wheels 113 the connecting bars 114 move the clamp supports 79 to the same extent.

The rear series of clamps for the box sides, together with the two rear knees 83, are movable for adjustment with reference to the corresponding devices at the front of the ma-' chine, in the following manner. Screws 1.17 extend from front to rear of the machine at both ends, turning loosely in standards 118 on the frame, and one of them is operated by shape filling in cor-v a hand-wheel 119; and at the rear side of the machine these screws are connected by bevel-gears 1.20 to a longitudinal shaft 121, which is mounted in brackets 122, so that the turning of one of the screws turns the other correspondingly. Nuts 123 in which the screws turn are secured to a connecting bar 124 that is secured. to the rear clamp bases 77 and to the bases 87 of the rear knees 83.

The clamp bases being slidable on the ways 78 and the knees on the ways 88 these parts may be moved toward the front or rear as desired to provide the proper intermediate spaces for boxes of different widths.

In operation, a pair of side boards having been set on edge between the clamps and the end boards in place against the knees, the operator presses down the foot-lever 18. The first effect is to transmit motion from the driving-shaft to the gear-wheel 17, the positions of the parts being at the .time of starting as indicated in Fig. 2. The movement of the wheel 17 then causesthe roller 48 to rise onto the wider portion of the wheel, thereby rocking the shafts 54 and operating the lifters for raising the bars 64 and thereby causing the clamps to engage the side boards. The further turning of the wheel 17 causes the pitman 43 to swing the lever 92 and thereby rock the shaft 93 and turn the crank-wheels 96, which latter thrust and pull respectively the )itmen 102 and 106 and thereby move the knees toward the middle of the machine. These movements press together the mortises and tenons of the box sides and ends, and when that operation is completed the wheel 17 will have made a half revolution and the further movement will retract the pitm an 43 and return the parts to their original positions.

\Vhether or not the operator holds the foot-lever in its depressed position is immaterial to the performance of the operations described, for when the wheel 17 makes a complete revolution the rocker 39 will be again engaged and pressed down by the pitman connection 42, with the result of enabling the spring 38 to separate the friction lifted to operative position by the action of the spring 23.

Having described my invention, what I claim and desire to secure by Letters Patent is- 1. In a machine for setting up dovetail boxes, means for supporting the box sides and ends in planes at right angles to each other, means for clamping the side boards, means under control of an operator for starting the machine, and automatic mechanism operated thereby in a cycle of movements, namely, first to clamp the side boards, next to thrust the end board supports to unite the end. to the side boards, next to retract the end board supports, next to open the clamps, and lastly to return the mechanism to initial position and. stop it, substantially as set forth.

2. In a machine for setting up dovetail boxes, means for supporting the box sides and ends in planes at right angles to each other, means for clamping the side boards, means under control of an operator for starting the revolution of a wheel providing a cam surface and a crank, mechanism operated by the cam surface for clamping and releasing theside boards, and reciprocating mechanism operated by the crank for uniting the end to the side boards, for returning the parts to initial position and for stopping the wheel, substantially as set forth.

3. In a machine for setting up. dovetail boxes, means for supporting the box sides and ends in planes at right angles to each other, means for clamping the side boards, a driven wheel, a cam surface and crank provided thereon, and mechanism actuated by the cam surface for operating the side board clamps, reciprocating carriers for the end boards and mechanism actuated by said crank for operating such carriers, substantially as set forth.

4. In .a machine for setting up dovetail boxes, means for supporting the box sides and ends in planes at right angles to each other, means for clamping the side boards, a driven wheel, a cam surface and crank provided thereon, and mechanism actuated by the cam surface for operating the side board clamps, reciprocating carriers for the end boards and mechanism actuated by said crank for operating such carriers, and a brake device also actuated by said crank for stopping the wheel upon completion of a revolution, substantially as set forth.

5. In a machine for setting up dovetail boxes, a driving-shaft, a driven shaft, friction-wheels thereon, a lever for bringing them into engagement, a driven wheel provided with a cam surface and a crank; clamps for the side boards, means actuated by said cam surface for operating them; and supports for the end boards and means connected with said crank for reciprocating them, substantially as set forth.

6. In a machine for setting up dovetail boxes, a driving-shaft, a driven shaft, friction-wheels thereon, a lever for bringing them into engagement, a driven wheel provided with a cam surface and a crank; clamps for the side boards, means actuated by said cam surface for operating them; and supports for the end boards and means connected with said crank for reciprocating them, and a brake device also actuated by said crank for stopping the wheel upon completion of a revolution, substantially as set forth.

7. Ina machine for setting up dovetail boxes, a driving-shaft, a driven-shaft, friction-wheels thereon, a lever for bringing them intoengagement, a driven wheel pro vided with a cam surface and a crank; clamps for the side boards, means actuated by said cam surface for operating them; reciprocating supports for the end boards, pitmen connected thereto and means actuated by the crank on said driven-wheel for operating said pitmen simultaneously in opposite directions, substantiallyas set forth.

8. In a machine for setting up dovetail boxes, a driving-shaft, a driven-shaft, friction-wheels thereon, a lever for bringing them into engagement, a driven wheel provided with a cam surface and a crank;

clamps for the side boards, means actuated by said cam surface for operating them; reciprocating supports for the end boards, pitmen connected thereto, a rock-shaft with which said pitmen are connected at opposite sides, and means actuated by the crank on the driven wheel for operating the rockshaft, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses this 26 day of June, 1907.

JOHN ERIOKSON 

